Touch panel and electronic device

Abstract

The application provides a touchpad and an electronic device. The touchpad comprises a touch circuit board and a supporting assembly. The center of the touch circuit board is provided with an NFC module for realizing near field communication between the touchpad and other electronic devices. The touch circuit board is provided with a travel switch on the side of the NFC module. The travel switch does not affect the recognition height of the NFC module while realizing the pressing trigger function of the touchpad. The supporting assembly is connected with the touch circuit board, and the supporting assembly is provided with a trigger piece. When the supporting assembly is pressed at any position of the touch surface of the touchpad, the supporting assembly is elastically deformed under the pressing force, so that the trigger piece contacts and triggers the travel switch, thereby realizing the pressing trigger function of the touchpad. The touchpad of the application not only has the NFC module to realize near field communication, but also can realize good and consistent pressing in the whole area.

Description

TECHNICAL FIELD

[0001] The present application relates to the touch control field, in particular to a touch pad and electronic equipment. BACKGROUND

[0002] The touch pad (TP) is one of the input devices applied to the electronic equipment such as notebook computer, which perceives the position and movement of the user's finger through the touch sensor and controls the pointer movement on the display interface.

[0003] The NFC (Near Field Communication) is a non-contact identification and interconnection technology, which adopts the 13.56MHz near field magnetic field communication mode and is widely applied to the near distance wireless communication between the mobile device, consumer electronic device, PC and smart control tool, so as to let the user exchange information, access content and service simply and intuitively.

[0004] Therefore, how to arrange the NFC function module on the touch pad becomes the goal pursued in the touch pad field. SUMMARY

[0005] The present application provides a touch pad and electronic equipment, which has the NFC module to realize the near field communication and can realize the full area pressing.

[0006] The first aspect of the present application provides a touch pad, comprising: a touch circuit board and a support assembly; the center of the touch circuit board is provided with an NFC module, and the side of the touch circuit board is provided with a travel switch; the support assembly is connected with the touch circuit board, and the support assembly is provided with a trigger on the support assembly; when the touch pad is pressed, the support assembly is elastically deformed under the pressing force, so that the trigger contacts the travel switch and triggers the travel switch.

[0007] The touch pad of the present application comprises a touch circuit board and a support assembly, wherein the center of the touch circuit board is provided with an NFC module for realizing the near field communication between the touch pad and other electronic equipment; the side of the touch circuit board is provided with a travel switch, which does not affect the identification height of the NFC module while realizing the pressing trigger function of the touch pad; and the support assembly is connected with the touch circuit board, and the support assembly is provided with a trigger, so that when the touch surface of the touch pad is pressed at any position, the support assembly is elastically deformed under the pressing force, so that the trigger contacts the travel switch and triggers the travel switch, thereby realizing the pressing trigger function of the touch pad. The touch pad of the present application not only has the NFC module to realize the near field communication, but also can realize the pressing with good consistency in the full area.

[0008] Optionally, the support assembly comprises a main support, a fixed platform, a first elastic member and a second elastic member; the main support has opposite first and second surfaces, the first surface of the main support is connected with the touch circuit board; the first and second elastic members are respectively connected with the second surface of the main support, the first and second elastic members jointly enclose an opening part accommodating the fixed platform, the first and second elastic members abut against each other, and the abutment positions of the first and second elastic members are arranged off-center relative to the NFC module; the fixed platform is connected with the first and second elastic members respectively, and the fixed platform is located in the opening part, and the trigger member is arranged on the fixed platform.

[0009] Optionally, the abutment positions between the first and second elastic members and the travel switch are respectively located on opposite sides of the NFC module.

[0010] Optionally, the main support is symmetrically arranged relative to a first center line extending in a longitudinal direction of the main support; the abutment positions of the first and second elastic members have a first distance from the first center line, and the travel switch has a second distance from the first center line, and the first distance is equal to the second distance.

[0011] Optionally, the first elastic member comprises a first body part extending in a longitudinal direction of the main support, and a first and a second elastic arm extending in a transverse direction of the main support, and the first body part is connected between the first and second elastic arms; the second elastic member comprises a second body part extending in the longitudinal direction of the main support, and a third and a fourth elastic arm extending in the transverse direction of the main support, and the second body part is connected between the third and fourth elastic arms; the first elastic arm, the first body part, the second elastic arm, the fourth elastic arm, the second body part and the third elastic arm enclose the opening part.

[0012] Optionally, the first and third elastic arms are opposite to each other, and the second and fourth elastic arms are opposite to each other, and the first and third elastic arms and the second and fourth elastic arms have a first gap therebetween; the distance between the first gap and the first center line is equal to the first distance.

[0013] Optionally, the first elastic arm and the second elastic arm extend away from the second elastic member to form a first cantilever beam, the third elastic arm and the fourth elastic arm extend away from the first elastic member to form a second cantilever beam, the first cantilever beam and the second cantilever beam are connected with the main support member; the first main body part extends towards the second elastic member to form a third cantilever beam, the second main body part extends towards the first elastic member to form a fourth cantilever beam, the fourth cantilever beam and the third cantilever beam are connected with the fixed platform.

[0014] Optionally, the support assembly further comprises a first connecting member and a second connecting member, the first connecting member is connected with a part of the first elastic member to reinforce the first elastic member, the second connecting member is connected with a part of the second elastic member to reinforce the second elastic member.

[0015] Optionally, the first connecting member comprises a first support part, a first support arm and a second support arm, the first support part is connected with the first main body part to reinforce the first main body part, the first support arm is connected with the first elastic arm to reinforce the first elastic arm, the second support arm is connected with the second elastic arm to reinforce the second elastic arm; the second connecting member comprises a second support part, a third support arm and a fourth support arm, the second support part is connected with the second main body part to reinforce the second main body part, the third support arm is connected with the third elastic arm to reinforce the third elastic arm, the fourth support arm is connected with the fourth elastic arm to reinforce the fourth elastic arm.

[0016] Optionally, the first support arm is provided with a protruding first linkage arm at an end opposite to the third support arm, the first linkage arm extends into the third elastic arm area to make the first support arm cross and coincide with the third elastic arm; the second support arm is provided with a protruding second linkage arm at an end opposite to the fourth support arm, the second linkage arm extends into the fourth elastic arm area to make the second support arm cross and coincide with the fourth elastic arm; the third support arm is provided with a protruding third linkage arm at an end opposite to the first support arm, the third linkage arm extends into the first elastic arm area to make the third support arm cross and coincide with the first elastic arm; the third linkage arm and the first linkage arm do not interfere with each other; the fourth support arm is provided with a protruding fourth linkage arm at an end opposite to the second support arm, the fourth linkage arm extends into the second elastic arm area to make the fourth support arm cross and coincide with the second elastic arm; the fourth linkage arm and the second linkage arm do not interfere with each other.

[0017] Optionally, the first linkage arm and the third support arm, the second linkage arm and the fourth support arm, the third linkage arm and the first support arm, the fourth linkage arm and the second support arm have a second gap therebetween, respectively, the second gap being greater than 0.2 mm; the first support arm and the third support arm and the second support arm and the fourth support arm form a crossing area therebetween, the crossing area having a dimension along the transverse direction of the main support greater than 0.8 mm.

[0018] Optionally, along the longitudinal direction of the main support, the first connecting member and the main support and the second connecting member and the main support have a third gap therebetween, the third gap being greater than 0.4 mm.

[0019] Optionally, the main support is a rectangular frame.

[0020] Optionally, the main support is a rectangular frame, and the rectangular frame comprises two opposite longitudinal frames and two opposite transverse frames, the two longitudinal frames extending along the longitudinal direction, and the two transverse frames extending along the transverse direction; the two longitudinal frames are provided with a cutout, the cutout having a dimension along the longitudinal direction greater than 0.5 mm.

[0021] Optionally, the opposite surfaces of the main support, the fixed platform, the first elastic member, the second elastic member, the first connecting member and the second connecting member are provided with a first pressure point groove, the first pressure point groove being used for controlling the flatness of the support assembly.

[0022] Optionally, the depth of the first pressure point groove on the main support is 0.06-1 mm, the depth of the first pressure point groove on the fixed platform is 0.04-0.08 mm, the depth of the first pressure point groove on the first elastic member and the second elastic member is 0.02-0.05 mm, and the depth of the first pressure point groove on the first connecting member and the second connecting member is 0.04-0.08 mm.

[0023] Optionally, the flatness of the main support is less than 0.15 mm, and the flatness of the fixed platform is less than 0.05 mm.

[0024] Optionally, the opposite surfaces of the support assembly are provided with a second pressure point groove, the second pressure point groove being used for controlling the flatness of the support assembly.

[0025] Optionally, the touch circuit board is provided with a plurality of fixing portions, the plurality of fixing portions being uniformly and spacedly arranged along the circumferential direction of the travel switch; the fixing portions are provided with threaded holes; the fixed platform is provided with a plurality of through holes, and the touch circuit board further comprises a plurality of screws, the screws being threadedly connected with the threaded holes through the through holes.

[0026] Optionally, the screw comprises a screw head, a polished rod part and a threaded part, the threaded part is threadedly connected with the threaded hole; two ends of the polished rod part are connected with the screw head and the threaded part respectively, one end of the polished rod part towards the screw head forms a first limiting surface, the first limiting surface abuts against the end surface of the fixed part; one end of the screw head towards the polished rod part forms a second limiting surface, the second limiting surface abuts against the fixed platform.

[0027] Optionally, the fixed part is a nut arranged on the touch circuit board.

[0028] Optionally, the travel switch is provided with a pressing column in contact with the trigger piece; when the touchpad is not pressed, the pressing column interferes with the trigger piece.

[0029] The second aspect of the present application provides an electronic device comprising a shell and the touchpad of the second aspect, the touchpad is installed in the shell.

[0030] The electronic device provided by the second aspect of the present application also has the same advantages as the touchpad of the first aspect because it comprises the touchpad of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0032] Figure 1a And Figure 1b It is a schematic diagram of the circuit board of the touchpad in the related art;

[0033] Figure 2 It is a structural schematic diagram of the touchpad provided by the first embodiment of the present application;

[0034] Figure 3 It is an exploded view of the touchpad provided by the first embodiment of the present application;

[0035] Figure 4 It is a structural schematic diagram of the touch circuit board of the touchpad provided by the present application;

[0036] Figure 5 It is a front view of the touch circuit board of the touchpad provided by the present application;

[0037] Figure 6A schematic view of a travel switch of a touchpad provided by an embodiment of the present application;

[0038] Figure 7 A partial sectional view of a touchpad provided by the first embodiment of the present application;

[0039] Figure 8 A structural schematic view of a support assembly provided by an embodiment of the present application;

[0040] Figure 9 An exploded view of a support assembly provided by an embodiment of the present application;

[0041] Figure 10 A front view of a touchpad provided by the second embodiment of the present application;

[0042] Figure 11 A structural schematic view of a screw provided by an embodiment of the present application; Figure 10 An enlarged schematic view of a P area;

[0043] Figure 12 A structural schematic view of a screw provided by an embodiment of the present application;

[0044] Figure 13 A cooperation schematic view of a screw, a fixing part and a fixing platform provided by an embodiment of the present application;

[0045] Figure 14 A structural schematic view of an electronic device provided by an embodiment of the present application.

[0046] Explanation of reference signs:

[0047] 1000: support assembly; 2000: touchpad; 3000: electronic device; 3100: shell;

[0048] 100: touch circuit board; 101: third surface; 102: fourth surface; 110: touch controller; 120: travel switch; 121: pressing column; 122: metal elastic sheet; 123: polyester film; 130: NFC module; 140: fixing part; 141: threaded hole;

[0049] 200: main support; 201: first surface; 202: second surface; 210: longitudinal frame; 220: transverse frame; 230: cutout; 240: first pressing point groove; 250: adhesive;

[0050] 300: fixing platform; 310: trigger; 320: via hole; 330: fixing nut;

[0051] 400: first elastic member; 401: opening part; 410: first main body part; 420: first elastic arm; 430: second elastic arm; 440: first cantilever beam; 450: third cantilever beam; 460: notch;

[0052] 500: second elastic member; 510: second main body part; 520: third elastic arm; 530: fourth elastic arm; 540: second cantilever beam; 550: fourth cantilever beam;

[0053] 600: first connecting member; 610: first support part; 620: first support arm; 621: first linkage arm; 630: second support arm; 631: second linkage arm;

[0054] 700: second connecting member; 710: second support part; 720: third support arm; 721: third linkage arm; 730: fourth support arm; 731: fourth linkage arm;

[0055] 800: screw; 810: screw head part; 811: second limiting surface; 820: light rod part; 821: first limiting surface; 830: threaded part;

[0056] 900: cover plate; 910: fixing glue. DETAILED DESCRIPTION

[0057] Touch Pad (TP) is one of the input devices applied to notebook computers and other electronic devices, which perceives the position and movement of the user's finger through touch sensor and controls the pointer movement on the display interface. NFC (Near Field Communication) is a non-contact identification and interconnection technology, which adopts 13.56 MHz near field magnetic field communication mode and is widely applied to the near distance wireless communication between mobile devices, consumer electronic devices, PCs and smart control tools, so as to make the user exchange information, access content and services simply and intuitively.

[0058] In the related technical field, the touch pad with NFC function combines Figure 1a The schematic diagram of the circuit board of the touch pad in the related technology is shown, the center area of the touch circuit board 10 is arranged with the ferrite of the NFC module. Since the metal near the ferrite will interfere with the signal absorption and affect the identification height and other performances of the NFC module, the travel switch 11 is arranged at the center of the length direction of the touch circuit board 10 and the lower part of the width direction, which is used to realize the pressing trigger function of the touch pad. The touch pad with the swing lever structure has the pressing function in the lower half area, but cannot realize the full area pressing, which affects the hand feeling and user experience during pressing.

[0059] In a touch pad capable of realizing full area pressing, the touch pad combines Figure 1bThe schematic diagram of the touch circuit board of the touchpad in the related art is shown. The travel switch 11 is arranged in the central region of the touch circuit board 10. However, the ferrite of the NFC module and the external induction coil cannot be arranged.

[0060] Therefore, how to arrange the NFC functional module on the touchpad and realize the full-area pressing of the touchpad become the goal pursued in the field of touchpad.

[0061] Therefore, the embodiment of the present application provides a touchpad, which comprises a support assembly and a touch circuit board. The NFC module is arranged in the middle region of the touch circuit board, and the travel switch is arranged on one side of the NFC module on the touch circuit board, so as to avoid the metal in the ferrite region of the NFC module from affecting the recognition height of the NFC module. The support assembly is used for supporting the touch circuit board. When the touchpad is pressed at any position, the support assembly is elastically deformed under the pressing force, so that the travel switch is contacted with the trigger arranged on the support assembly and the travel switch is triggered. The NFC module is arranged on the touchpad, and the full-area pressing of the touchpad is realized.

[0062] Further, the touchpad provided by the embodiment of the present application has the structure of the support assembly, so that the pressing force fluctuation at any position of the touchpad is small, and the consistency of the pressing stroke is improved.

[0063] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0064] Embodiment one

[0065] Figure 2 The structural schematic diagram of the touchpad provided by the embodiment one of the present application is shown; Figure 3 The exploded view of the touchpad provided by the embodiment one of the present application is shown. Figure 4 The structural schematic diagram of the touch circuit board of the touchpad provided by the embodiment of the present application is shown; Figure 5 The front view of the touch circuit board of the touchpad provided by the embodiment of the present application is shown.

[0066] In combination with Figure 2 and Figure 3 , the embodiment of the present application provides a touchpad, which comprises a touch circuit board 100 and a support assembly 1000. The touch circuit board 100 is used for realizing the touch function and the pressing function of the touchpad, and the support assembly 1000 is used for supporting the touch circuit board 100.

[0067] In combination Figure 5 and Figure 6 The touch circuit board 100 can be a printed circuit board (PCB), and the PCB can be assembled by surface mounted technology (SMT) or dual in-line package (DIP) to realize the touch sensing function of the touchpad. The electronic components include but are not limited to the touch controller 110, the travel switch 120, the NFC module 130, the touch sensor, and the connector. The connector is used to realize the communication function between the entire PCBA and the notebook keyboard or the leather keyboard.

[0068] Alternatively, in order to make the touchpad more thin, the touch circuit board 100 can also be a flexible printed circuit (FPC).

[0069] The touch sensor can be arranged on the PCB. For example, the touch sensor can include a capacitive touch sensor, which is used to sense the change of the capacitance at the touch position in response to the touch of the user, and output a corresponding touch sensing signal. The touch controller 110 is used to determine the touch position of the finger on the touchpad according to the touch sensing signal.

[0070] In an implementable embodiment, in combination Figure 3 and Figure 4 The touch circuit board 100 has a third surface 101 and a fourth surface 102. The fourth surface 102 of the touch circuit board 100 is the surface of the touch circuit board 100 facing the support assembly 1000, and the third surface 101 of the touch circuit board 100 is the surface of the touch circuit board 100 away from the support assembly 1000. The touch sensor can be arranged on the third surface 101 of the touch circuit board 100, and the touch controller can be arranged on the fourth surface 102 of the touch circuit board 100.

[0071] The NFC module 130 is used to realize the NFC function. The NFC module 130 usually includes a ferrite and a coil. The ferrite is used to concentrate the magnetic flux, and the coil is used to generate the NFC signal. The NFC module 130 is arranged at the center of the touch circuit board 100, in combination Figure 4 and Figure 5When the touch circuit board 100 is a rectangular plate, the length direction of the touch circuit board 100 extends along the X-axis direction, and the width direction of the touch circuit board 100 extends along the Y-axis direction. The NFC module 130 is located at the center of the length direction of the touch circuit board 100 and at the center of the width direction of the touch circuit board 100.

[0072] The coil of the NFC module 130 can be built in the touch circuit board 100, or the coil of the NFC module 130 can be arranged on the surface of the touch circuit board 100, for example, the coil of the NFC module 130 is arranged on the fourth surface 102 of the touch circuit board 100. The ferrite of the NFC module 130 can be mounted on the surface of the touch circuit board 100, for example, the ferrite of the NFC module 130 is mounted on the fourth surface 102 of the touch circuit board 100.

[0073] The travel switch 120 is used to realize the pressing trigger function of the touchpad. The travel switch 120 can be an elastic structure. When the touchpad is pressed by a finger, the touchpad moves in the direction of the force, and the travel switch 120 is elastically deformed. The travel switch 120 can also be a compressible structure. When the touchpad is pressed by a finger, the touchpad moves in the direction of the force, and the travel switch 120 is compressed. The travel switch 120 of the embodiment of the present application includes a flexible or elastic material, such as rubber or flexible metal, and also includes a conductive material, such as a metal piece. When the flexible or elastic material is elastically deformed under the action of the pressing force, the conductive material is turned on under the action of the elastic deformation of the flexible or elastic material, so that the travel switch 120 sends a conduction signal. When the pressing force disappears, the flexible or elastic material returns to the deformation, so that the conductive material is disconnected and the travel switch 120 is disconnected.

[0074] In the embodiment of the present application, the travel switch 120 is arranged on the fourth surface 102 of the touch circuit board 100, and the travel switch 120 is located on the side of the NFC module 130. Figure 4 and Figure 5 In the structure shown, the travel switch 120 is located on the left side of the NFC module 130; but this is not limiting. For example, the travel switch 120 can also be located on the right side of the NFC module 130. The travel switch 120 can be fixed on the fourth surface 102 of the touch circuit board 100 by adhesion or SMT. In other embodiments, the position of the travel switch 120 can also be set to other positions on the side of the NFC module 130 as needed.

[0075] Figure 6 A schematic diagram of the travel switch of the touchpad provided in the embodiment of the present application is shown. Figure 7 A partial cross-sectional view of the touchpad provided in the first embodiment of the present application is shown.

[0076] The travel switch 120 can be a metal dome switch. The metal dome switch is a polyethylene terephthalate (PET) sheet containing a metal spring (pot piece) and used on a circuit board such as a PCB or a flexible printed circuit (FPC) as a switch.

[0077] With reference to Figure 6 and Figure 7 , the travel switch 120 of the embodiment of the application includes a metal spring 122, a Mylar 123, and a pressing column 121. The diameter of the metal spring 122 is 7 mm, the diameter of the pressing column 121 is 1.85 mm, the Mylar 123 is rectangular with an outer dimension of 13.6 mm*8.8 mm and a thickness along the Z-axis direction of 0.49 mm. The travel switch 120 can withstand a weight of 180 g.

[0078] Alternatively, the travel switch 120 of the embodiment of the application can also be a switch selector, also known as a Switch switch.

[0079] With reference to Figure 3 and Figure 4 , the support assembly 1000 is connected with the touch circuit board 100. Specifically, the support assembly 1000 is connected with the fourth surface 102 of the touch circuit board 100 to support the touch circuit board 100. The support assembly 1000 is provided with a trigger 310. When the touchpad is pressed, the support assembly 1000 is elastically deformed under the pressing force to make the trigger 310 contact the travel switch 120 and trigger the travel switch 120 to send a pressing signal.

[0080] The support assembly 1000 of the embodiment of the application is a linkage device that makes the touchpad move synchronously as a whole when any position of the touchpad is pressed, thereby realizing full-area pressing of the touchpad.

[0081] Figure 8 A structural schematic diagram of the support assembly provided by the embodiment of the application is shown in FIG. 4. Figure 9 An exploded view of the support assembly provided by the embodiment of the application is shown in FIG. 5.

[0082] With reference to Figure 8 and Figure 9 , the support assembly 1000 includes a main support 200, a fixed platform 300, a first elastic member 400, and a second elastic member 500. The support assembly 1000 is a sheet-shaped structure.

[0083] The main support 200 can be a ring-shaped frame, such as a rectangular frame, with sufficient rigidity. In combination with Figure 9 The main support 200 includes two opposite longitudinal frames 210 and two opposite transverse frames 220. The two longitudinal frames 210 extend in the longitudinal direction (corresponding to the Y-axis direction in the figure), and the two transverse frames 220 extend in the transverse direction (corresponding to the X-axis direction in the figure). The two longitudinal frames 210 are perpendicular to the two transverse frames 220, and the two longitudinal frames 210 are connected to the ends of the two transverse frames 220 to form a rectangular main support 200.

[0084] The main support 200 has opposite first and second surfaces 201 and 202. In combination with Figure 2 and Figure 3 The first surface 201 of the main support 200 is connected to the fourth surface 102 of the touch control circuit board 100. For example, the first surface 201 of the main support 200 is bonded to the fourth surface 102 of the touch control circuit board 100 by adhesive 250. The adhesive 250 can be double-sided foam tape with a thickness of 0.15 mm. The adhesive 250 can absorb and prevent the main support 200 from deforming during assembly, thereby affecting the flatness of the support assembly 1000. The thickness of the double-sided foam tape after compression during assembly of the support assembly 1000 is 0.1 mm.

[0085] The first and second elastic members 400 and 500 are respectively connected to the second surface 202 of the main support 200. The connection methods include, but are not limited to, welding, stamping, and bonding. The first and second elastic members 400 and 500 together form an opening 401 that accommodates the fixed platform 300, and the first and second elastic members 400 and 500 abut each other. The abutment position of the first and second elastic members 400 and 500 is the linkage position of the support assembly 1000. That is, when the first elastic member 400 is elastically deformed under the pressing force, it drives the second elastic member 500 to elastically deform and move through the abutment position; or, when the second elastic member 500 is elastically deformed under the pressing force, it drives the first elastic member 400 to elastically deform and move through the abutment position, thereby realizing full-area pressing of the touchpad.

[0086] The abutment position of the first and second elastic members 400 and 500 is offset from the center relative to the NFC module 130. It can be understood that the first and second elastic members 400 and 500 are asymmetrically arranged relative to the NFC module 130, so as to facilitate the installation of the travel switch 120 on the side of the NFC module 130. In this way, the travel switch 120 and the ferrite of the NFC module 130 are staggered in the thickness direction of the touchpad (corresponding to the Z-axis direction in the figure). In this way, the identification height of the NFC module 130 can be avoided.

[0087] In some possible implementation manners, the abutment position between the first elastic member 400 and the second elastic member 500 is located on the opposite side of the travel switch 120 relative to the NFC module 130, as shown in FIG. 1A. Figure 2 As shown in FIG. 1A, the travel switch 120 is located on the left side of the NFC module 130, and the abutment position between the first elastic member 400 and the second elastic member 500 is located on the right side of the NFC module 130. Alternatively, the travel switch 120 is located on the right side of the NFC module 130, and the abutment position between the first elastic member 400 and the second elastic member 500 is located on the left side of the NFC module 130. When the touchpad is pressed in the region on one side of the touchpad where the travel switch 120 is arranged, the elastic member is deformed to make the trigger member 310 trigger the travel switch 120; the abutment position between the first elastic member 400 and the second elastic member 500 is arranged on the side where the ferrite is away from the travel switch 120, so that when the touchpad is pressed in the region on the other side of the touchpad, the trigger member 310 triggers the travel switch 120 through the linkage deformation of the first elastic member 400 and the second elastic member 500, thereby realizing the full-area pressing function of the touchpad.

[0088] Figure 10 a front view of the touchpad provided in Embodiment Two of the present application; Figure 11 a front view of the touchpad provided in Embodiment Two of the present application; Figure 10 an enlarged schematic view of the P region in FIG. 2B.

[0089] in combination with Figure 10 and Figure 11 , the main support member 200 is symmetrically arranged relative to a first center line O1 extending along the longitudinal direction of the main support member 200 (corresponding to the Y-axis direction in the figure). The abutment position between the first elastic member 400 and the second elastic member 500 has a first distance L1 relative to the first center line O1, and the travel switch 120 has a second distance L2 relative to the first center line O1, and the first distance L1 is equal to the second distance L2. In this way, the consistency of the pressing force on the touchpad is improved, and the fluctuation of the pressing force value is reduced.

[0090] in combination with Figure 7 and Figure 9 , the fixed platform 300 of the present application is connected with the first elastic member 400 and the second elastic member 500, respectively, and the connection manner includes but is not limited to welding, stamping, bonding and the like. The fixed platform 300 is located in the opening portion 401, and the trigger member 310 is arranged on the fixed platform 300. The trigger member 310 can be a boss arranged on the fixed platform 300, or the trigger member 310 can be an elastic member arranged on the fixed platform 300, such as a silica gel column, a rubber column or the like. The form of the trigger member 310 is not limited herein, as long as the trigger member 310 can contact the travel switch 120 and trigger the travel switch 120 when the touchpad is pressed.

[0091] In one possible implementation manner, as shown in Figure 8 and Figure 9As shown, the trigger 310 is a circular boss arranged on the surface of the fixed platform 300. Alternatively, the circular boss is formed by extrusion of the fixed platform 300, and the other surface of the fixed platform 300 corresponding to the circular boss has an extrusion-formed groove. The diameter of the circular boss can be (1.5-3) ± 0.05 mm, and the height thereof along the Z-axis direction is (0.05-0.15) ± 0.02 mm.

[0092] It can be understood that the trigger 310 is used to contact and trigger the travel switch 120 when the touchpad is pressed. Figure 7 In the thickness direction of the touchpad (corresponding to the Z-axis direction in the figure), the trigger 310 is opposite to the travel switch 120, and the projection of the trigger 310 on the fourth surface 102 of the touch circuit board 100 is located at the side of the NFC module 130.

[0093] In combination with Figure 8 and Figure 9 The fixed platform 300 of the embodiment of the present application further has a fixed nut 330 arranged thereon. Specifically, the fixed platform 300 has a fixed hole, and the fixed nut 330 is fixed in the fixed hole, for example, by riveting. The fixed nut 330 is connected to the shell of the electronic device by a fixed screw, so as to mount the touchpad on the shell of the electronic device. In some embodiments, the fixed platform 300 has a plurality of fixed nuts 330 arranged in a rectangular matrix on the fixed platform 300. For example, the fixed platform 300 has four fixed nuts 330 arranged at the ends of two opposite longitudinal edges of the fixed platform 300. The longitudinal edges of the fixed platform 300 extend along the Y-axis direction, and the two longitudinal edges are spaced apart along the X-axis direction. In this way, the reliability of the connection between the fixed platform 300 and the shell of the electronic device can be improved, and the fixed platform 300 can be evenly fixed on the shell of the electronic device, so as to avoid the inclination of the fixed platform 300 relative to the shell of the electronic device and affect the touch operation.

[0094] In combination with Figure 7 When the touchpad is pressed, the fixed platform 300 is fixedly connected to the shell of the electronic device and is relatively stationary, and the touch circuit board 100, the main support 200, the first elastic member 400, and the second elastic member 500 are deformed and move towards the negative direction of the Z-axis, so that the pressing column 121 of the travel switch 120 on the touch circuit board 100 contacts the trigger 310, the trigger 310 applies an action force F towards the positive direction of the Z-axis to the travel switch 120, the action force F extrudes the metal spring 122 of the travel switch 120, so that the metal spring 122 is deformed and conducts, thereby causing the travel switch 120 to send a pressing signal.

[0095] The first elastic member 400 and the second elastic member 500 of the embodiment of the present application comprise elastically bendable materials, such as metal springs. Since the first elastic member 400 and the second elastic member 500 have elasticity, the product has a sheet shape and weak strength. The embodiment of the present application uses connecting members with similar shapes and certain rigidity to reinforce and support.

[0096] Specifically, with continued reference to Figure 8 and Figure 9 , the support assembly 1000 of the embodiment of the present application further comprises a first connecting member 600 and a second connecting member 700. The first connecting member 600 is connected to a part of the first elastic member 400 to reinforce the first elastic member 400, and is located on the side of the first elastic member 400 facing the first surface 201 of the main support member 200. The connection mode of the first connecting member 600 and the first elastic member 400 includes, but is not limited to, welding, stamping, and bonding. The second connecting member 700 is connected to a part of the second elastic member 500 to reinforce the second elastic member 500, and is located on the side of the second elastic member 500 facing the first surface 201 of the main support member 200. The connection mode of the second connecting member 700 and the second elastic member 500 includes, but is not limited to, welding, stamping, and bonding. The first connecting member 600 and the second connecting member 700 are not in direct contact with the main support member 200 and the fixed platform 300, and do not interfere with each other.

[0097] With continued reference to Figure 10 , the first connecting member 600 has a third distance L3 between the end of the first connecting member 600 and the end of the fixed platform 300 along the transverse direction of the main support member 200 (corresponding to the X-axis direction in the figure), and the second connecting member 700 has a fourth distance L4 between the end of the second connecting member 700 and the end of the fixed platform 300 along the transverse direction of the main support member 200 (corresponding to the X-axis direction in the figure). The fourth distance L4 is greater than the third distance L3. Optionally, the ratio of the fourth distance L4 to the third distance L3 is 1:2. Such a setting is conducive to improving the consistency of the pressing force on the touchpad and reducing the fluctuation of the pressing force value.

[0098] With continued reference to Figure 8 and Figure 9In one possible implementation, the first elastic member 400 includes a first main body portion 410 extending longitudinally (corresponding to the Y-axis direction in the figure) along the main support member 200, and a first elastic arm 420 and a second elastic arm 430 extending transversely (corresponding to the X-axis direction in the figure) along the main support member 200. The first main body portion 410 is connected between the first elastic arm 420 and the second elastic arm 430. In this embodiment, the two ends of the first main body portion 410 are respectively connected to the ends of the first elastic arm 420 and the second elastic arm 430. Of course, this is not limiting; for example, the two ends of the first main body portion 410 can also be connected to the middle portions of the first elastic arm 420 and the second elastic arm 430, respectively. In this embodiment, the first main body portion 410, the first elastic arm 420, and the second elastic arm 430 are integrally formed as a single piece.

[0099] The second elastic member 500 includes a second main body portion 510 extending longitudinally (corresponding to the Y-axis direction in the figure) along the main support member 200, and a third elastic arm 520 and a fourth elastic arm 530 extending laterally (corresponding to the X-axis direction in the figure) along the main support member 200. The second main body portion 510 is connected between the third elastic arm 520 and the fourth elastic arm 530. In this embodiment, the two ends of the second main body portion 510 are respectively connected to the middle portions of the third elastic arm 520 and the fourth elastic arm 530, forming an I-shaped sheet structure. In this embodiment, the second main body portion 510, the third elastic arm 520, and the fourth elastic arm 530 are integrally formed as a single piece.

[0100] Thus, the first elastic arm 420, the first main body 410, the second elastic arm 430, the fourth elastic arm 530, the second main body 510, and the third elastic arm 520 form the opening 401.

[0101] The first elastic arm 420 and the third elastic arm 520 extend along the same horizontal line on the second surface 202 of the main support member 200, and the second elastic arm 430 and the fourth elastic arm 530 extend along the same horizontal line within the second surface 202 of the main support member 200. Figure 10 and Figure 11 A first gap G5 is provided between the first elastic arm 420 and the third elastic arm 520, and between the second elastic arm 430 and the fourth elastic arm 530. The first gap G5 has a second center line O2 extending longitudinally, and the distance between the second center line O2 and the first center line O1 is equal to the first distance L1. This arrangement helps to improve the consistency of pressing pressure on both sides of the first center line O1, thereby improving the consistency of pressing pressure throughout the entire area of ​​the touchpad.

[0102] In the embodiments of the present application, the first elastic arm 420 and the second elastic arm 430 have the same length in the transverse direction, the third elastic arm 520 and the fourth elastic arm 530 have the same length in the transverse direction, and the length of the first elastic arm 420 is greater than the length of the third elastic arm 520, so that the abutting positions of the first elastic member 400 and the second elastic member 500 and the travel switch 120 are respectively located on two sides of the NFC module 130.

[0103] In some possible implementation manners, the above continues to combine Figure 8 and Figure 9 The first elastic arm 420 and the second elastic arm 430 respectively extend away from the second elastic member 500 to form two first cantilever beams 440, which are respectively formed by the first elastic arm 420 and the second elastic arm 430 as overhanging pieces or tabs; the third elastic arm 520 and the fourth elastic arm 530 respectively extend away from the first elastic member 400 to form two second cantilever beams 540, which are respectively formed by the third elastic arm 520 and the fourth elastic arm 530 as overhanging pieces or tabs; the first cantilever beam 440 and the second cantilever beam 540 are connected with the main support 200. Specifically, the first cantilever beam 440 and the second cantilever beam 540 are respectively connected with the two longitudinal frames 210 of the main support 200. The connection mode of the first cantilever beam 440 and the second cantilever beam 540 with the two longitudinal frames 210 includes but is not limited to bonding, welding and the like. Of course, the first cantilever beam 440 can also be formed by the first main body part 410 extending outward.

[0104] The first main body part 410 partially extends outward toward the second elastic member 500 to form a third cantilever beam 450, which can be an overhanging piece or a tab formed by the first main body part 410; in the longitudinal direction (corresponding to the Y-axis direction in the figure) of the main support 200, the third cantilever beam 450 is located between the two first cantilever beams 440. The second main body part 510 partially extends outward toward the first elastic member 400 to form a fourth cantilever beam 550, which can be an overhanging piece or a tab formed by the second main body part 510; in the longitudinal direction (corresponding to the Y-axis direction in the figure) of the main support 200, the fourth cantilever beam 550 is located between the two second cantilever beams 540. The fourth cantilever beam 550 and the third cantilever beam 450 are connected with the fixed platform 300, and the connection mode of the fourth cantilever beam 550 and the third cantilever beam 450 with the fixed platform 300 includes but is not limited to bonding, welding and the like.

[0105] In the embodiments of the present application, two third cantilever beams 450 are arranged at two longitudinal ends of the first main body part 410. In the embodiments of the present application, two fourth cantilever beams 550 are arranged at two longitudinal ends of the second main body part 510. In this way, the stability of the connection between the elastic member and the fixed platform 300 is improved.

[0106] Thus, the first elastic member 400 is elastically connected between the fixed platform 300 and the main support 200 through the two first cantilever beams 440 and the two third cantilever beams 450, and the second elastic member 500 is elastically connected between the fixed platform 300 and the main support 200 through the two second cantilever beams 540 and the two fourth cantilever beams 550. The two first cantilever beams 440, the two second cantilever beams 540, the two third cantilever beams 450 and the two fourth cantilever beams 550 are not required to be attached with reinforcing members for ensuring elasticity, and can rotate, flex, bend or pivot relative to the main support 200 or the fixed platform 300 when the touchpad is pressed. Thus, the cantilever beams without reinforcing members can make the elastic members have greater elastic deformation, which is beneficial to improve the sensitivity of pressing and reduce the pressing force.

[0107] The structures of the first connecting member 600 and the second connecting member 700 are described in detail below to achieve the reinforcing effect on the elastic members. The material of the first connecting member 600 can be the same as that of the first elastic member 400. The first elastic member 400 needs to maintain a certain elasticity, and has a small thickness. The thickness of the first connecting member 600 is greater than that of the first elastic member 400, and the first connecting member 600 plays a role in reinforcing the first elastic member 400. The material of the second connecting member 700 can be the same as that of the second elastic member 500. The thickness of the second connecting member 700 is greater than that of the second elastic member 500, and the second connecting member 700 plays a role in reinforcing the second elastic member 500. The "thickness" mentioned here refers to the size along the Z-axis direction.

[0108] Continuing to refer to Figure 8 and Figure 9 , the shape of the first connecting member 600 is similar to that of the first elastic member 400. Specifically, the first connecting member 600 includes a first support portion 610, a first support arm 620 and a second support arm 630. The first support portion 610 is connected with the first main body portion 410 to reinforce the first main body portion 410. The first support arm 620 is connected with the first elastic arm 420 to reinforce the first elastic arm 420. The second support arm 630 is connected with the second elastic arm 430 to reinforce the second elastic arm 430.

[0109] The second connecting member 700 includes a second support portion 710, a third support arm 720 and a fourth support arm 730. The second support portion 710 is connected with the second main body portion 510 to reinforce the second main body portion 510. The third support arm 720 is connected with the third elastic arm 520 to reinforce the third elastic arm 520. The fourth support arm 730 is connected with the fourth elastic arm 530 to reinforce the fourth elastic arm 530.

[0110] The first support arm 620 and the third support arm 720 extend along the same horizontal line, and the second support arm 630 and the fourth support arm 730 extend along the same horizontal line. The first support arm 620 and the second support arm 630 have the same length in the transverse direction, the third support arm 720 and the fourth support arm 730 have the same length in the transverse direction, and the length of the first support arm 620 is greater than the length of the third support arm 720.

[0111] It should be noted that, as shown in Figure 9 The first elastic arm 420 and the first support arm 620 attached to the first elastic arm 420 are provided with notches 460, and the second elastic arm 430 and the second support arm 630 attached to the second elastic arm 430 are provided with notches 460 to avoid the arrangement of the circuit elements. Of course, the notches 460 can also be avoided by adjusting the position of the circuit elements.

[0112] The linkage connection structure is formed between the first elastic member 400, the second elastic member 500, the first connecting member 600 and the second connecting member 700, so that when the left side of the touchpad is pressed, the force is transmitted to the right side through the elastic arm and the support arm to realize the downward movement of the right side at the same time, when the right side of the touchpad is pressed, the force is transmitted to the left side through the elastic arm and the support arm to realize the downward movement of the left side at the same time, thereby realizing the full area pressable of the touchpad.

[0113] Specifically, the opposite end of the first support arm 620 and the third support arm 720 is provided with a protruding first linkage arm 621, the first linkage arm 621 extends into the third elastic arm 520 area, so that the first support arm 620 and the third elastic arm 520 cross and coincide; the opposite end of the second support arm 630 and the fourth support arm 730 is provided with a protruding second linkage arm 631, the second linkage arm 631 extends into the fourth elastic arm 530 area, so that the second support arm 630 and the fourth elastic arm 530 cross and coincide, so that the support arm (i.e. the first support arm 620 and the second support arm 630) of the first connecting member 600 is linked with the elastic arm (i.e. the third elastic arm 520 and the fourth elastic arm 530) of the second elastic member 500 through the linkage arm (i.e. the first linkage arm 621 and the second linkage arm 631).

[0114] The third supporting arm 720 is provided with a protruding third linkage arm 721 at the opposite end of the first supporting arm 620, the third linkage arm 721 extends into the area of the first elastic arm 420, so that the third supporting arm 720 and the first elastic arm 420 cross and coincide; the fourth supporting arm 730 is provided with a protruding fourth linkage arm 731 at the opposite end of the second supporting arm 630, the fourth linkage arm 731 extends into the area of the second elastic arm 430, so that the fourth linkage arm 731 and the second elastic arm 430 cross and coincide; in this way, the supporting arms (i.e. the third supporting arm 720 and the fourth supporting arm 730) of the second connecting piece 700 are linked with the elastic arms (i.e. the first elastic arm 420 and the second elastic arm 430) of the first elastic piece 400 through the linkage arms (i.e. the third linkage arm 721 and the fourth linkage arm 731).

[0115] The third linkage arm 721 and the first linkage arm 621 do not interfere with each other, that is, the first supporting arm 620 is provided with a notch at the position corresponding to the third linkage arm 721 to avoid the third linkage arm 721, and the third supporting arm 720 is provided with a notch at the position corresponding to the first linkage arm 621 to avoid the first linkage arm 621. In the drawings, the third linkage arm 721 is close to the inner side of the opening part 401, and the first linkage arm 621 is close to the outer side of the opening part 401; but this is not limiting; for example, the third linkage arm 721 is close to the outer side of the opening part 401, and the first linkage arm 621 is close to the inner side of the opening part 401.

[0116] The fourth linkage arm 731 and the second linkage arm 631 do not interfere with each other, that is, the second supporting arm 630 is provided with a notch at the position corresponding to the fourth linkage arm 731 to avoid the fourth linkage arm 731, and the fourth supporting arm 730 is provided with a notch at the position corresponding to the second linkage arm 631 to avoid the second linkage arm 631. In the drawings, the fourth linkage arm 731 is close to the inner side of the opening part 401, and the second linkage arm 631 is close to the outer side of the opening part 401; but this is not limiting; for example, the fourth linkage arm 731 is close to the outer side of the opening part 401, and the second linkage arm 631 is close to the inner side of the opening part 401.

[0117] The third linkage arm 721 and the first linkage arm 621, the fourth linkage arm 731 and the second linkage arm 631 of the present application enable the force to be conducted to the right side through the cross and coincidence structure of the elastic arm and the linkage arm when pressing the left side of the touchpad, so as to realize the right side moving downward at the same time; similarly, the force can be conducted to the left side through the cross and coincidence structure of the elastic arm and the linkage arm when pressing the right side of the touchpad, so as to realize the left side moving downward at the same time.

[0118] In combination with Figure 7 , Figure 9 , Figure 10 and Figure 11The working principle of the embodiment of the present application for full-area pressing of the touchpad is as follows: when a user presses the center and the left area of the touchpad, i.e. the left area of the second center line O2, the support assembly 1000 takes the fixed platform 300 as a support plane, deforms downward (corresponding to the negative direction of the Z axis in the figure) through the first elastic member 400 to move downward, and conducts force from the first elastic member 400 to the second elastic member 500 through the intersecting and overlapping structure of the elastic arms and the linkage arms, i.e. drives the second elastic member 500 to also move downward at the same time, until the fixed platform 300 triggers the pressing column 121 of the travel switch 120 and touches the travel switch metal spring 122, thereby realizing the touch pressing function. In summary, when the touchpad is pressed, the elastic member elastically deforms, and the touch circuit board 100 continuously moves toward the fixed platform 300 in the pressing direction, the trigger 310 extrudes the pressing column 121 of the travel switch 120, and touches the travel switch metal spring 122, thereby realizing the touch pressing function.

[0119] It should be noted that the downward displacement of the first elastic member 400 and the second elastic member 500 can have a certain deviation, and generally speaking, the displacement of the pressing side downward is larger. When a user presses the right side area of the touchpad, i.e. the right side area of the second center line O2, the force is conducted to the left side in the same way, so that the left side also moves downward at the same time.

[0120] It should be further noted that in the above description, the "left side" refers to the left side area of the second center line O2 of the first gap between the elastic arms of the first elastic member 400 and the elastic arms of the second elastic member 500, and the "right side" refers to the right side area of the second center line O2.

[0121] In combination Figure 11 , the first linkage arm 621 and the third support arm 720, the second linkage arm 631 and the fourth support arm 730, the third linkage arm 721 and the first support arm 620, and the fourth linkage arm 731 and the second support arm 630 have a second gap G3 (see FIG. 6) between them, respectively. Figure 11 For example, the gap between the fourth linkage arm 731 and the second support arm 630), the second gap G3 is greater than 0.2 mm.

[0122] The first linkage arm 621 and the third linkage arm 721 are located between the first support arm 620 and the third support arm 720, and the second linkage arm 631 and the fourth linkage arm 731 are located between the second support arm 630 and the fourth support arm 730. Therefore, the first support arm 620 and the third support arm 720 and the second support arm 630 and the fourth support arm 730 form an intersection area between them, and the size G2 of the intersection area in the transverse direction (corresponding to the X axis in the figure) of the main support member 200 is greater than 0.8 mm, which ensures the linkage effect of the linkage arms and the elastic arms.

[0123] In this embodiment, along the transverse direction of the main support member 200 (corresponding to the X-axis direction in the figure), there is a third gap G4 between the first connector 600 and the main support member 200, and between the second connector 700 and the main support member 200. That is, the first connector 600 and the second connector 700 are suspended relative to the main support member 200, and the third gap G4 is greater than 0.4mm, so that the first elastic member 400 and the second elastic member 500 can deform. Specifically, there is a third gap G4 between the first support portion 610 of the first connector 600 and the left longitudinal frame 210 of the main support member 200, and there is a third gap G4 between the third support arm 720 and the fourth support arm 730 of the second connector 700 and the right longitudinal frame 210 of the main support member 200.

[0124] If the flatness of the support component 1000 in this embodiment is too large, it will lead to poor consistency of touchpad pressing force. That is, different positions on the touchpad will require different amounts of force, and the pressure fluctuation will be significant. Furthermore, a large flatness of the support component 1000 means the pressing stroke needs to be factored in with the flatness dimension, resulting in a longer pressing stroke and thus affecting the user experience. Therefore, designing the support component 1000 with flatness control can further optimize the touchpad's performance parameters and improve the user experience. Flatness refers to the deviation of the macroscopic unevenness of the substrate from an ideal plane.

[0125] In this embodiment, the main support 200, the fixed platform 300, the first elastic member 400, the second elastic member 500, the first connector 600, and the second connector 700 are all sheet-like structures, and each of their two opposing surfaces is provided with a first pressure point groove 240. The first pressure point groove 240 is used to control the flatness of the support assembly 1000. For details, please refer to... Figure 9 as well as Figure 11 This improves the consistency of pressing pressure across the entire touchpad area, reduces touchpad pressure buildup, and enhances the user experience. Taking the main support member 200 as an example, first pressure grooves 240 are respectively set on the two opposite surfaces of the main support member 200, which is equivalent to pressing the main support member 200 from the two opposite surfaces of the main support member 200, thereby changing the flatness of the main support member 200.

[0126] exist Figure 11 The first pressure point groove 240 shown is a rectangular groove. Of course, the first pressure point groove 240 can also be a circular groove or a groove of other shapes. The depth (i.e., the dimension along the Z-axis) of the first pressure point groove 240 on the main support member 200, the fixed platform 300, the first elastic member 400, the second elastic member 500, the first connector 600, and the second connector 700 can be the same or different. Those skilled in the art can determine the depth of the first pressure point groove 240 according to the thickness of each component and the processing technology.

[0127] For example, the depth of the first pressure point groove 240 on the main support 200 is 0.06-1mm, which is used to control the flatness of the main support 200 to be less than 0.15mm; the depth of the first pressure point groove on the fixed platform 300 is 0.04-0.08mm, which is used to control the flatness of the fixed platform 300 to be less than 0.05mm. The depth of the first pressure point groove on the first elastic member 400 and the second elastic member 500 is 0.02-0.05mm, and the depth of the first pressure point groove on the first connecting member 600 and the second connecting member 700 is 0.04-0.08mm.

[0128] Alternatively, the support assembly 1000 is a sheet structure, and second pressure point grooves are arranged on the opposite surfaces of the support assembly 1000, which are used to control the flatness of the support assembly 1000. Specifically, the second pressure point grooves are arranged on the opposite surfaces of the main support 200 and the fixed platform 300 respectively, and the second pressure point grooves are arranged on only one surface of the first elastic member 400, the second elastic member 500, the first connecting member 600 and the second connecting member 700, i.e., the surface of the first elastic member 400 in contact with the first connecting member 600 is not provided with the second pressure point groove, and the surface of the second elastic member 500 in contact with the second connecting member is not provided with the second pressure point groove; in other words, the surface of the first elastic member 400 not in contact with the first connecting member 600 is provided with the second pressure point groove, and the surface of the second elastic member 500 not in contact with the second connecting member is provided with the second pressure point groove.

[0129] In combination Figure 10 The two longitudinal frames 210 of the main support 200 are provided with cutouts 230, and the size of the cutouts 230 along the longitudinal direction (corresponding to the Y-axis direction in the figure) is greater than 0.5mm, so that the main support 200 is cut into two half frames, at this time, the two first cantilever beams 440 of the first elastic member 400 are connected with the two half frames respectively, and the two second cantilever beams 540 of the second elastic member 500 are connected with the two half frames respectively. The embodiment of the present application reduces the stress caused by the deformation of the main support 200 by arranging the cutouts 230 on the two longitudinal frames 210 of the main support 200, improves the consistency of the pressing force and other parameter indexes; and also reduces the material cost, so that the deformation of the main support 200 is relaxed to 0.25mm, which is beneficial to improve the product yield.

[0130] In addition, after the main support 200 is cut into two half frames, positioning holes are arranged on the two half frames respectively, which facilitates assembly positioning.

[0131] After the main support 200 is cut into two half frames by the cutouts 230, the 25-point pressing deviation, pressing stroke and pressing force value fluctuation parameters of the touchpad are tested, specifically, the 25-point deviation percentage (pressure consistency) test method includes:

[0132] (1) The touchpad is divided into 5 rows and 5 columns, a total of 25 grids, and the trigger pressure of each position is tested in turn;

[0133] (2) A position of the 25 grids is selected, and a φ10mm static pressure head is slowly applied until the touchpad button responds, and the reading of the device at the time of response is recorded;

[0134] (3) Each position is tested 10 times, and the average of the 10 data is taken as the trigger force threshold value of the point;

[0135] (4) The percentage deviation is the average trigger pressure value of 25 points divided by the average value of the node.

[0136] The test results show that the 25-point deviation is less than 14.6%, the pressing stroke is between 0.1-0.37mm, and the pressing force value fluctuation is 146N±6%. Such setting is conducive to reducing the 25-point pressing deviation of the touchpad, improving the pressing force consistency, shortening the pressing stroke, and reducing the pressing force value fluctuation, so that the performance of the touchpad is better, and the user experience is further improved.

[0137] The specific test data is shown in Table 1.

[0138] Table 1

[0139]

[0140] In combination Figure 7 In the embodiments of the present application, when the touchpad is not pressed, the pressing column 121 of the travel switch 120 interferes with the trigger piece 310, and the metal spring piece 122 in the travel switch 120 is elastically deformed to offset the interference. For example, when the pressing column 121 of the travel switch 120 interferes with the trigger piece 310 by 0.1mm, the metal spring piece is compressed by 0.1mm. The pressing column 121 is in hard contact with the surface of the trigger piece 310, and the surface is in a zero-to-zero state. The above interference structure design can compensate for the gap caused by the deformation of the main support 200 and the fixed platform 300. Thanks to the control of the flatness of the main support (less than 0.15mm), the interference design of the pressing column 121 and the trigger piece 310 can be realized without affecting the pressing stroke of the touchpad.

[0141] In some possible embodiments, the touch control circuit board 100 and the fixed platform 300 are threadedly connected, so that when the touchpad is not pressed, the pressing column 121 of the travel switch 120 interferes with the trigger piece 310. In combination Figure 4 and Figure 5The fourth surface 102 of the touch circuit board 100 is provided with a plurality of fixing portions 140, which are uniformly arranged along the circumference of the travel switch 120 to balance the force applied to the travel switch 120. For example, two fixing portions 140 are arranged above and below the travel switch 120 respectively, or two fixing portions 140 are arranged left and right of the travel switch 120 respectively, and the two fixing portions 140 are symmetrical about the travel switch 120; or, three fixing portions 140 are arranged along the circumference of the travel switch 120. The number of the fixing portions 140 is not limited herein.

[0142] The fixing portion 140 is provided with a threaded hole 141. For example, the fixing portion 140 is a boss provided on the fourth surface 102 of the touch circuit board 100, and the threaded hole 141 is formed in the boss. For another example, the fixing portion 140 is a nut provided on the touch circuit board 100. The nut can be attached to the surface of the fourth surface 102 by SMT, or the touch circuit board 100 is provided with a recess, and the nut is fixed in the recess. In this way, the thickness of the touch circuit board 100 can be reduced, and the thickness of the touch panel can be reduced. Optionally, the inner thread M2 of the nut has a pitch of 0.25 mm, and is made of copper material plated with tin.

[0143] Optionally, the center of the fixing portion 140 and the center of the travel switch 120 have a fifth distance L5, which can be 10 mm. The fifth distance L5 can prevent the fixing portion 140 from being too close to the travel switch 120 to affect the deformation of the travel switch 120, and can prevent the fixing portion 140 from being too far away from the travel switch 120 to have a small limiting effect on the travel switch 120.

[0144] In combination with Figure 3 and Figure 9 The fixing platform 300 is provided with a plurality of through holes 320, the number of the through holes 320 is consistent with the number of the fixing portions 140, and the positions of the through holes 320 are the same as the positions of the fixing portions 140. The touch panel provided in the embodiment of the application further includes a plurality of screws 800, which are screwed through the through holes 320 and the threaded holes 141, so that the trigger 310 on the fixing platform 300 can press the travel switch 120, and the pressing column 121 of the travel switch 120 and the trigger 310 interfere with each other when the touch panel is not pressed.

[0145] Figure 12 The structure diagram of the screw of the touch panel provided in the embodiment of the application is shown; Figure 13 The cooperation diagram of the screw, the fixing portion and the fixing platform provided in the embodiment of the application is shown.

[0146] In combination with Figure 12 and Figure 13The screw 800 comprises a screw head 810, a polished rod part 820 and a threaded part 830, two ends of the polished rod part 820 are connected with the screw head 810 and the threaded part 830 respectively, and the screw head 810, the polished rod part 820 and the threaded part 830 are an integral part. The diameter of the polished rod part 820 is larger than that of the screw head 810, and thus a first limiting surface 821 is formed at one end of the polished rod part 820 towards the screw head 810; the diameter of the screw head 810 is larger than that of the polished rod part 820, and a second limiting surface 811 is formed at one end of the screw head 810 towards the polished rod part 820. When the threaded part 830 is threadedly connected with the threaded hole 141, the first limiting surface 821 abuts against the end surface of the fixed part 140, and the second limiting surface 811 abuts against the fixed platform 300.

[0147] In this way, the Z-direction deformation fluctuation of the travel switch 120 and the fixed platform 300 can be reduced to 0.05 mm, so as to improve the pressing feeling and the consistency of the travel. When the touchpad is pressed, the screw 800 moves downward together with the touchpad, and after the pressing force is released, the touchpad rebounds and abuts against the fixed platform 300 through the second limiting surface 811 and is located on the fixed platform 300.

[0148] The touchpads with or without the screw 800 and the main support 200 with or without the cutout 230 are respectively tested in terms of 25-point pressing deviation, pressing travel and pressing force value fluctuation, and the test data are shown in Table 2.

[0149] As shown in Table 2, the 25-point deviation of the touchpad with the smaller flatness of the main support 200 is smaller, the maximum value of the pressing travel is smaller, the minimum value of the pressing force is smaller, and the pressing force value fluctuation is smaller, so that the consistency of the pressing force in the whole area of the touchpad is improved.

[0150] As shown in Table 2, the 25-point deviation of the touchpad with the cutout 230 of the main support 200 is smaller, the pressing travel is shortened, and the pressing force is smaller, that is, the user can realize the pressing function of the touchpad by using a smaller force, the sensitivity of pressing is provided, and the user experience is improved; the pressing force value fluctuation is smaller, so that the consistency of the pressing force in the whole area of the touchpad is further improved.

[0151] Table 2

[0152]

[0153] As shown in Table 2, the 25-point deviation of the touchpad with the screw 800 threadedly connected with the fixed part 140 is smaller, the pressing travel is shortened, the user can realize the pressing function of the touchpad by using a smaller force, the user experience is further improved; the pressing force value fluctuation is smaller, so that the consistency of the pressing force in the whole area of the touchpad is further improved.

[0154] As can be seen from Table 2, the 25-point deviation is less than 7%, the pressing stroke is between 0.12-0.38mm, and the pressing force value fluctuation is 184N±8% when the cutout 230 is arranged on the main support 200, the touchpad is arranged to be threadedly connected with the fixing portion 140, and the screw 800 is arranged. It can be seen that the test data shows that the scheme reduces the 25-point pressing deviation of the touchpad, improves the pressing force consistency, shortens the pressing stroke, and makes the pressing force value fluctuation smaller, thereby improving the user experience.

[0155] Continuing with Figure 2 and Figure 3 , the touchpad of the embodiment of the present application further comprises a cover plate 900, which is bonded to the third surface 101 of the touch control circuit board 100. Specifically, the cover plate 900 is bonded to the third surface 101 of the touch control circuit board 100 through the fixing glue 910.

[0156] The cover plate 900 is located on the outer surface of the entire touchpad and is a substantially planar rigid material sheet. The top surface of the cover plate 900 is configured to contact one or more user objects, such as a finger or a stylus, when the touchpad is operated. Therefore, a user can provide input to the touchpad 900 by clicking, sliding or pressing or otherwise applying force to the top surface of the cover plate 900 using the above-mentioned one or more user objects. The material of the cover plate 900 is a rigid material, which can be glass, PC sheet, ceramic sheet, etc. non-conductive rigid object; the top surface of the cover plate 900 can be smooth or have a rough texture, so that the appearance of the touchpad meets the product aesthetic design. The cover plate 900 can be substantially rectangular in shape, and in some embodiments, the rectangular outer surface edges of the cover plate 900 can also be rounded. In another possible embodiment, the shape of the cover plate 900 can also be a circle, a triangle, etc. similar basic shape for receiving user touch input. The top surface of the cover plate 900 referred to herein refers to the surface of the cover plate 900 away from the touch control circuit board 100.

[0157] The fixing glue 910 is used to bond the cover plate 900 and the touch control circuit board 100. The fixing glue 910 can be liquid glue or solid glue, for example, the fixing glue 910 can be grid double-sided adhesive or OCA optical glue. It should be noted that there is no bubble in the middle of the cover plate 900 and the touch control circuit board 100 after being bonded by the fixing glue 910, so as to enhance the touch signal.

[0158] The process flow for assembling the full touch panel in this embodiment includes: bonding a cover plate 900 and a fixing adhesive 910 to form component one, ensuring that there are no air bubbles between the cover plate 900 and the fixing adhesive 910; bonding the PCBA after SMT to component one to form component two; connecting the first elastic member 400, the second elastic member 500, the first connector 600, the second connector 700, the main support member 200, and the fixing platform 300 together by laser welding to form component three; bonding component two and component three by adhesive 250 and threading screws 800 to threaded holes 141 to form the aforementioned touch panel.

[0159] In summary, the touchpad of this embodiment includes a touch circuit board 100 and a support assembly 1000. The touch circuit board 100 has an NFC module 130 at its center for near-field communication between the touchpad and other electronic devices. A limit switch 120 is located on the side of the NFC module 130, enabling the touchpad to be triggered by pressure without affecting the recognition height of the NFC module 130. The support assembly 1000 is connected to the touch circuit board 100 and has a trigger element 310. When the support assembly 1000 is pressed at any position on the touchpad surface, it undergoes elastic deformation under pressure, causing the trigger element 310 to contact the limit switch 120 and trigger the limit switch 120, thus enabling the touchpad to be triggered by pressure. The touchpad of this embodiment not only has an NFC module 130 for near-field communication but also provides consistent pressing across the entire area.

[0160] Furthermore, the support component 1000 in this embodiment includes a main support 200, a fixed platform 300, a first elastic element 400, a second elastic element 500, a first connector 600, and a second connector 700. The flatness of the support component 1000 is controlled by setting pressure point grooves. A cutout 230 is set in the longitudinal frame 210 of the main support 200. The screw 800 is threadedly connected to the fixing part 140 on the touch circuit board 100, so that the trigger 310 and the pressing post 121 of the limit switch 120 interfere with each other when there is no pressing force. This improves the consistency of pressing force in the entire area of ​​the touch panel, reduces the fluctuation of pressing force value, shortens the pressing stroke, and makes the touch pressing of the touch panel more sensitive, which is conducive to improving the user experience.

[0161] Figure 14 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0162] Combination Figure 14This application also provides an electronic device 3000, which includes a housing 3100 and a touch panel 2000, the touch panel 2000 being installed inside the housing 3100. The housing 3100 may be provided with a mounting structure, such as a mounting platform or mounting post, and the fixing platform of the touch panel 2000 is fixed to the housing 3100 by fixing screws. The structure, function, and effect of the touch panel 2000 in this embodiment are the same as those in Embodiment 1 above, and specific details can be found in Embodiment 1 above, which will not be repeated here.

[0163] The electronic device 3000 of this application embodiment also includes a host computer, which is electrically connected to a touch controller 110. On one hand, the touch controller 110 provides a drive signal to the touch sensor to drive touch detection according to the control signal of the host computer; on the other hand, the touch controller 110 is used to receive the touch sensing signal and the press conduction signal output by the touch sensor and the limit switch 120 when a finger presses on the touchpad, and to determine the finger position information and the finger press signal based on the touch sensing signal and the press conduction signal.

[0164] The technical solutions of this application can be applied to various electronic devices, such as smartphones, laptops, tablets, laptop keyboards, leather keyboard cases, gaming devices, and other portable or mobile computing devices, as well as electronic databases, automobiles, bank ATMs, and other electronic devices. However, this application does not limit these applications.

[0165] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A touchpad, characterized in that, include: Touch circuit board and supporting components; An NFC module is located at the center of the touch circuit board. The NFC module includes a ferrite core and an induction coil. A limit switch is located on the side of the NFC module on the touch circuit board. The support assembly is connected to the touch circuit board, and a trigger is provided on the support assembly. When the touch panel is pressed, the support assembly undergoes elastic deformation under the pressure, so that the trigger contacts the limit switch and triggers the limit switch. The support assembly includes a main support member, a first elastic member, and a second elastic member. The main support member has a first surface and a second surface opposite to each other. The first surface of the main support member is connected to the touch circuit board. The first elastic member and the second elastic member are respectively connected to the second surface of the main support member and are mated to each other. The mating position of the first elastic member and the second elastic member is offset from the center of the NFC module. The mating position between the first elastic member and the second elastic member and the limit switch are located on opposite sides of the NFC module.

2. The touchpad according to claim 1, characterized in that, The support assembly further includes a fixed platform, which is connected to the first elastic member and the second elastic member respectively. The first elastic member and the second elastic member together form an opening to accommodate the fixed platform, and the fixed platform is located inside the opening. The trigger member is disposed on the fixed platform.

3. The touchpad according to claim 2, characterized in that, The main support member is symmetrically arranged with respect to the first centerline extending along its own longitudinal direction; The mating positions of the first elastic element and the second elastic element are at a first distance from the first center line, and the limit switch is at a second distance from the first center line, wherein the first distance and the second distance are equal.

4. The touchpad according to claim 3, characterized in that, The first elastic member includes a first main body extending longitudinally along the main support member, and a first elastic arm and a second elastic arm extending laterally along the main support member, wherein the first main body is connected between the first elastic arm and the second elastic arm. The second elastic member includes a second main body extending longitudinally along the main support member, and a third elastic arm and a fourth elastic arm extending laterally along the main support member, with the second main body connected between the third elastic arm and the fourth elastic arm. The first elastic arm, the first main body, the second elastic arm, the fourth elastic arm, the second main body, and the third elastic arm form the opening.

5. The touchpad according to claim 4, characterized in that, The first elastic arm and the third elastic arm are opposite each other, and the second elastic arm and the fourth elastic arm are opposite each other. There is a first gap between the first elastic arm and the third elastic arm, and between the second elastic arm and the fourth elastic arm. The distance between the first gap and the first center line is equal to the first distance.

6. The touchpad according to claim 4, characterized in that, The first elastic arm and the second elastic arm extend away from the second elastic member to form a first cantilever beam, and the third elastic arm and the fourth elastic arm extend away from the first elastic member to form a second cantilever beam. Both the first cantilever beam and the second cantilever beam are connected to the main support member. The first main body extends toward the second elastic member to form a third cantilever beam, and the second main body extends toward the first elastic member to form a fourth cantilever beam. Both the fourth cantilever beam and the third cantilever beam are connected to the fixed platform.

7. The touchpad according to any one of claims 4-6, characterized in that, The support assembly further includes a first connector and a second connector; The first connector includes a first support portion, a first support arm, and a second support arm. The first support portion is connected to the first main body portion to reinforce the first main body portion. The first support arm is connected to the first elastic arm to reinforce the first elastic arm. The second support arm is connected to the second elastic arm to reinforce the second elastic arm. The second connector includes a second support portion, a third support arm, and a fourth support arm. The second support portion is connected to the second main body portion to reinforce the second main body portion. The third support arm is connected to the third elastic arm to reinforce the third elastic arm. The fourth support arm is connected to the fourth elastic arm to reinforce the fourth elastic arm.

8. The touchpad according to claim 7, characterized in that, The first support arm is provided with a protruding first linkage arm at one end opposite to the third support arm. The first linkage arm extends into the area of ​​the third elastic arm so that the first support arm and the third elastic arm overlap. The second support arm is provided with a protruding second linkage arm at one end opposite to the fourth support arm. The second linkage arm extends into the area of ​​the fourth elastic arm so that the second support arm and the fourth elastic arm overlap. The third support arm is provided with a protruding third linkage arm at the end opposite to the first support arm. The third linkage arm extends into the first elastic arm area so that the third support arm and the first elastic arm overlap. The third linkage arm does not interfere with the first linkage arm; The fourth support arm is provided with a protruding fourth linkage arm at one end opposite to the second support arm. The fourth linkage arm extends into the area of ​​the second elastic arm so that the fourth support arm and the second elastic arm overlap. The fourth linkage arm does not interfere with the second linkage arm.

9. The touchpad according to claim 8, characterized in that, A second gap is provided between the first linkage arm and the third support arm, between the second linkage arm and the fourth support arm, between the third linkage arm and the first support arm, and between the fourth linkage arm and the second support arm, and the second gap is greater than 0.2 mm; an intersection area is formed between the first support arm and the third support arm and between the second support arm and the fourth support arm, and the dimension of the intersection area in the transverse direction of the main support member is greater than 0.8 mm; Along the longitudinal direction of the main support member, there is a third gap between the first connector and the main support member and between the second connector and the main support member, the third gap being greater than 0.4 mm.

10. The touchpad according to any one of claims 2-6, characterized in that, The main support is a rectangular frame, which includes two opposing vertical borders and two opposing horizontal borders. The two vertical borders extend vertically, and the two horizontal borders extend horizontally. The two vertical borders are provided with cutouts, and the vertical dimension of the cutouts is greater than 0.5mm.

11. The touchpad according to any one of claims 2-6, characterized in that, The touch circuit board is provided with a plurality of fixing parts, which are evenly spaced along the circumference of the limit switch; the fixing parts are provided with threaded holes. The fixed platform is provided with multiple through holes, and the touch panel also includes multiple screws, which pass through the through holes and are threadedly connected to the threaded holes.

12. The touchpad according to claim 11, characterized in that, The screw includes a screw head, a smooth shank, and a threaded portion, the threaded portion being threadedly connected to the threaded hole; both ends of the smooth shank are respectively connected to the screw head and the threaded portion, the end of the smooth shank facing the screw head forms a first limiting surface, the first limiting surface abutting against the end face of the fixing portion; the end of the screw head facing the smooth shank forms a second limiting surface, the second limiting surface abutting against the fixing platform.

13. The touchpad according to claim 11, characterized in that, The fixing part is a nut provided on the touch circuit board.

14. An electronic device, characterized in that, It includes a housing and a touchpad as described in any one of claims 1-13, wherein the touchpad is mounted within the housing.

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